*{
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body{
  font-family: Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  color: $text-color;
  background-color: $app-body-color;
  line-height: 1.5;
}
a{
  color: #444;
  text-decoration: none;
}
img{
  max-width: 100%;
}
ul, ol{
  list-style-type: none;
}